RT Journal T1 Negative Magnetoresistance in Antiferromagnetic Topological Insulator EuSn$_2$As$_2$$^{*}$ A1 Huan-Cheng Chen, Zhe-Feng Lou, Yu-Xing Zhou, Qin Chen, Bin-Jie Xu, Shui-Jin Chen, Jian-Hua Du, Jin-Hu Yang, Hang-Dong Wang, Ming-Hu Fang PB Chin. Phys. Lett. FD 2020-03-06 YR 2020 JF Chinese Physics Letters JO Chin. Phys. Lett. VO 37 IS 4 SP 047201DO 10.1088/0256-307X/37/4/047201 K1 LK {https://cpl.iphy.ac.cn/EN/article/article_105560.shtml}